Sections of infantry ammunitions - 4th section
of the artillery depot

Ambulance and field hospitals

0.65 x 0.5 m.White field with a red border and a red cross in the
middle.
Lanterns: 1 white and 1 red.

Telegraph posts

by Ivan Sache

0.65 x 0.5 m. White field with a blue border and a blue T in the
middle.
Lantern: Similar to the pennant.

Army postal service

by Ivan Sache

0.65 x 0.5 m. White field with a green border and a green P in the
middle.
Lantern: Similar to the pennant.

Umpires (arbitres)

by Ivan Sache

0.65 x 0.5 m. White field with a red border.
Lantern: Red.

Umpires might have been similar to what the modern US terminology
would call observer/controler (or OC) - personnel belonging to
the unit executing an excercise or proffesionals from specialized
institutions who follow the course of the excercise as "neutral side"
and are consulted in after action reviews for evaluation of the
excercise.

Zeljko Heimer, 23 November 2000

A wargaming expert could probably explain why at some obscure
level a modern controller fills a completely different role than the
umpire of the 1930s, but I've been a controller (in command post
exercises, not in the field) and believe that the positions are
functionally the same. I suspect the terminology was changed because
someone objected to the sporting connotations in English of the word
"umpire" and wanted to convey that wargames are not really games.